Device for obtaining an upward lubricant circulation in spinning spindles



June 8, 1954 BIRKIGT 2,680,495 DEVICE FOR OBTAINING AN UPWARD LUBRICANT CIRCULATION IN SPINNING SPINDLES Filed March 6, 1952 INVEIVIUR.

400/5 5/9/4467; Q er Patented June 8, 1954 DEVICE FOR OBTAINING AN UPWARD LUBRICANT CIRCULATION IN SPIN- NIN G SPIN DLE S Louis Birkigt, Versoix,

assignor to Society near Geneva, Hispano-Suiza (Suisse) Switzerland,

S. A., Geneva, Switzerland, a society of Switzerland Application March 6, 1952, Serial No. 275,095

Claims priority, application Luxembourg March 7, 1951 1 Claim. (Cl. 18413) The present invention relates to devices for obtaining an upward circulation of lubricant in spinning spindles driven through a worm and worm wheel gear located above an oil bath.

The chief object of my invention is to provide a device of this kind which is better adapted to meet the requirements of practice than those used for the same purposes up to the present time.

According to my invention, this device essentially comprises a rotating tube, of substantially vertical axis, turning together with a spindle and surrounding it coaxially at a distance therefrom, this tube having its lower end immersed in the oil bath, this lower end being surrounded, at a small distance therefrom, by a fixed cup shaped part of the bottom of which is provided with a hole located opposite the bore of said tube and of smaller area than the cross section of said bore, whereby, when the tube is rotated at a sufficient speed, liquid rises along the inner wall thereof.

Preferred embodiments of my invention will be hereinafter described with reference to the accompanying drawings, given merely by way of example, and in which section view of a spinning spindle provided with a device according to my invention.

The drawing shows the lower part of a spinning spindle mechanism provided with a lubricating device according to my invention. Said mechanism includes a bobbin carrying spindle 5 resting,

a spring l. This spindle 5 extends with some play through a tube 1 coaxial therewith and with which it is o allowing for slight oscillatory displacements of Rotation movethe diameter of spindle 5 at the level of this hole, so as to leave an annular interval for the flow of oil between the inner wall of said orifice o and said spindle 5. Oil passing upwardly through this annular interval ascends along the inner wall of tube in the form of a film f the thickness of which decreases upwardly.

This upward stream of oil may be used in particular for the following purposes:

To lubricate the region where worm wheel 3 and worm t are in tangential contact with each other, a radial passage It being provided for this purpose in the wall of tube 1; and

To lubricate an upper bearing (not visible in the drawing) in which spindle 5 is guided.

The device according to my invention has the of working irrespective of the spindle.

a cylindrical cup-shaped part fixed with respect to sa1d casing and surrounding the lower end of and smaller than the inner diameter of said lower end of said tube.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 275,867 Steinmetz Apr. 17, 1883 336,903 Dummer Mar. 2, 1886 1,425,000 Frost Aug. 8, 1922 1,931,996 Schimpke Oct. 24, 1933 2,067,123 Hait Jan. 5, 1937 FOREIGN PATENTS Number Country Date 887,147 Franc Aug, 2, 1943 

